Online PHP editor | refs for pnq81

<?php declare(ticks=1); function tick() { global $ticks; if ($ticks) { $tick = array_shift($ticks); $tick(); } } register_tick_function('tick'); class A { protected $b = ['d' => 321]; function & __get($name) { echo "And now, __get is running...\n"; $GLOBALS['ticks'][] = function () { echo "THIS IS WHERE WE VALIDATE CHANGES TO THE ARRAY!\n"; }; return $this->{$name}; } } eval(' $a = new A(); $a->b["c"] = 123; var_dump($a->b); ');